Currently at home I am running a custom XP disc but I have lost the original so I am stuck searching for a new OS to reformat. My old one was the bomb cause it was a "Naked" custom xp disc that had almost nothing on it, just enough to start the machine. Great for gaming cause I only have 512 and when first installed it ran like a champ. Obviously like normal over time it just got all gunked up. I cannot find the nuked copy anymore and would like to hear if anyone has any other things they use?